CN202495891U - Device and system for automatically searching power - Google Patents
Device and system for automatically searching power Download PDFInfo
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- CN202495891U CN202495891U CN 201120552110 CN201120552110U CN202495891U CN 202495891 U CN202495891 U CN 202495891U CN 201120552110 CN201120552110 CN 201120552110 CN 201120552110 U CN201120552110 U CN 201120552110U CN 202495891 U CN202495891 U CN 202495891U
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Abstract
The utility model discloses a device for automatically searching maximum power. The device comprises a data importing unit, a power judging unit, a power transmitting unit, and a power searching unit, wherein the data importing unit is used for importing all power point data of a solar panel, the power judging unit is connected with data importing unit and is used for judging whether the power point data reaches a maximum power point during a preset period, the power transmitting unit is connected with the power judging unit and is used for searching the maximum power point of the solar panel and outputting the maximum power to an inverter, and the power searching unit is connected with power judging unit and is used for constant searches with different brightness. The utility model also discloses a system for automatically searching power. In the utility model, an optimal power for power generation of the solar panel is searched and inputted into the inverter, and luminous energy generated by a photoelectric generator is fully utilized, thereby increasing efficiency.
Description
Technical field
The utility model relates to inverter, more particularly, relates to automatic searched devices of a kind of power and system.
Background technology
Progress along with expanding economy, society; People propose increasingly high requirement to the energy; Seek new forms of energy and become the urgent problem that current mankind faces; And it is very huge to be radiated at tellurian solar energy, is radiated at tellurian solar energy, the consumption that just is enough to supply 1 year energy of global human in about 40 minutes.We can say that solar energy is really inexhaustible, the nexhaustible energy, and solar power generation is definitely clean, does not produce public hazards, is perfect energy sources so solar power generation is described as.
Obtain electric power from solar energy, need to carry out light-to-current inversion and realize through solar cell.It has following characteristics with other power supply electricity generating principles were different fully in the past: 1. do not have exhausted dangerous; 2. absolute clean (nuisanceless); 3. do not receive the restriction of resource distribution region; 4. can generate electricity nearby in electricity consumption place; 5. can source quality high; 6. the user is acceptant on the emotion; The time of 7. obtaining energy cost is short.Weak point is: 1. the Energy distribution density of irradiation is little, promptly will take huge area; 2. the same four seasons of the energy that obtain, reach and rain or shine wait meteorological condition relevant round the clock.But generally speaking, one flaw cannot mar the jade, and as new forms of energy, solar energy has very big advantage, therefore receives the attention of countries in the world.
When utilizing solar power generation, a plurality of optical-electric modules are electrically connected, optical-electric module electricity power are delivered to electrical network through one or more inverters.
Inverter is the equipment that direct current is converted to alternating current.Because solar cell and storage battery are DC power supplys, and load is when being AC load, and inverter is absolutely necessary.Inverter can be divided into independent operating inverter and combining inverter by operational mode.The independent operating inverter is used for the solar cell power generation system of independent operating, is independent electric.The solar cell power generation system that combining inverter is used to be incorporated into the power networks.Inverter can be divided into square-wave inverter and sinewave inverter by the output wave mode.The square-wave inverter circuit is simple, and cost is low, but harmonic component is big, generally is used for below several hectowatts and the system not high to harmonic requirement.The sinewave inverter cost is high, but goes for various loads.
Photovoltaic generating system is by solar cell array, batteries, and charging-discharging controller, inverter, AC power distribution cabinet/AC distribution panel, equipment such as solar tracking control system are formed.
Along with the difference of illumination, the power of solar panels input varies, and how to export maximum power to inverter, and people constantly seek better method.
The utility model content
In order to solve above problem, a kind of method, Apparatus and system of exporting the automatic search of solar panel maximum power to inverter is provided.
The utility model discloses the automatic searched devices of a kind of power, comprising:
Data importing unit: all data of solar panels power points that are used to import search;
The power judging unit: link to each other with described data importing unit, whether the data of power points have reached maximum power point when being used to judge predetermined amount of time;
Power delivery unit links to each other with described power judging unit, is used to search for said solar panel maximum power point and exports described maximum power to inverter;
Power is searched the unit, links to each other with described power judging unit, is used for constantly searching along with the difference of brightness.
In the automatic searched devices of the described power of the utility model, all data of described solar panels power points comprise voltage and the electric current that the solar panels of preset moment point produce.
In the automatic searched devices of the described power of the utility model, the power points of described maximum is preset reference power point.
The utility model discloses a kind of power system of search automatically; Comprise photocurrent generator; The inverter that links to each other with said photocurrent generator; With load and electrical network that described inverter links to each other respectively, with the control unit that described inverter and photocurrent generator link to each other, described control unit comprises the above-mentioned automatic searched devices of a kind of power.
The power points of the maximum in the utility model real-time tracking solar panels has been given play to the maximum effect of solar panels, and voltage is high more, through maximum power tracing, can export maximum electric weight, thereby improves generating efficiency.
Implement the automatic searched devices of a kind of power and the system of the utility model, have following beneficial technical effects:
Realized that sunlight is input to inverter with the mode of preset maximum power, makes full use of the luminous energy that photocurrent generator produces.
Description of drawings
Fig. 1 is a kind of power of the utility model embodiment method flow diagram of search automatically;
Fig. 2 is the automatic searched devices functional-block diagram of a kind of power of the utility model embodiment;
Fig. 3 is a kind of power of the utility model embodiment system unit composition diagram of search automatically.
Embodiment
By the technology contents, the structural feature that specify the utility model, realized purpose and effect, know clearly below in conjunction with execution mode and conjunction with figs. and give explanation.
By common practise, we can know: photovoltaic generation (Solar photovoltaics (PV)) is according to the photovoltaic effect principle, utilizes solar cell that solar energy is converted into electric energy.Independent use or generate electricity by way of merging two or more grid systems no matter be; Photovoltaic generating system mainly is made up of solar panel (assembly), controller and inverter three parts; They mainly are made up of electronic devices and components, do not relate to mechanical part, so; The very refining of photovoltaic generation equipment, the reliable and stable life-span is long, installation and maintenance are easy.Theoretically, photovoltaic power generation technology can be used for any occasion that needs power supply, goes up to spacecraft, down to domestic power supply, arrives the MW class power station greatly, and little of toy, photo-voltaic power supply can be ubiquitous.
Current strength; Under the constant situation of voltage, the generating voltage of the utility model method detecting real-time solar panels a lot of problems will not appear, if there is power points to follow the trail of; And follow the trail of the ceiling voltage current value, make system with the highest efficient to combining inverter to mains supply.
See also Fig. 1, a kind of power is the method for search automatically, comprising:
S1. import all data of solar panels power points of search; The all data of described solar panels power points comprise voltage and the electric current that the solar panels of preset moment point produce.
Solar panels are photocurrent generator (PV batteries), are a kind of semiconductor device, and its electrical characteristic is similar with diode, and still, the PV battery is power source rather than electrical load (diode then is), can become current source when it receives light (like sunlight) exposure.
Intensity of illumination and temperature all can influence the PV battery behavior.Electric current is directly proportional with intensity of illumination, and voltage equally also can change along with the fluctuation of intensity of illumination, and voltage receives the influence that the PV battery temperature changes more easily.
Whether the data of S2. judging the power points in the predetermined amount of time have reached maximum power point; If, get into step S3, if not, get into step S4, the power points of described maximum is preset reference power point.
The power of PV battery can reduce with the reduction of intensity of illumination and/or the rising of temperature.Solar inverter could obtain ceiling capacity when the maximum power point output services of PV battery, can use the maximum power point control ring to reach this purpose, this control ring be also referred to as the maximum power point tracking device (Maximum Power Point Tracker, MPPT).In addition, the PV output voltage ripple at PV module terminals place must be enough little, so as its when near MPP, working the PV change in current not too large.
S3. search for said solar panel maximum power point and export described maximum power to inverter;
The amplitude of ripple voltage must be lower than 8.5% of MPP voltage just can reach 98% utilance, and for example, if the MPP voltage of certain PV module is 35V, then in order to keep 98% utilance, its voltage ripple amplitude should not surpass 3.0V.
S4. constantly search along with the difference of brightness.
Solar cell can be worked in the voltage and current scope of broad.Through the resistive load on the exposure battery is continued to increase to very high value from zero, can confirm MPP, that is to say that under this exposure intensity, load can be obtained maximum power from battery.
Practice confirms; High-quality monocrystaline silicon solar cell is 25 can produce the open circuit voltage of 0.6V when spending in its temperature; Under the sufficient situation of illumination; Battery temperature may be near 45 degree (even temperature be 25 degree), and maximum power (battery temperature is 45 degree) is 75 to 80% of an open circuit voltage at voltage usually, and electric current is to produce under 90% the condition of short circuit current.
See also Fig. 2, the automatic searched devices of a kind of power, be used to realize above-mentioned method, comprising:
Data importing unit 10, power judging unit 20, power delivery unit 30, power are searched unit 40.
Data importing unit 10: all data of solar panels power points that are used to import search;
Power judging unit 20: link to each other with data importing unit 10, whether the data of power points have reached maximum power point when being used to judge predetermined amount of time;
Power delivery unit 30 links to each other with power judging unit 20, is used to search for said solar panel maximum power point and exports described maximum power to inverter;
Power is searched unit 40, links to each other with power judging unit 20, is used for constantly searching along with the difference of brightness.
Wherein, all data of described solar panels power points comprise voltage and the electric current that the solar panels of preset moment point produce, and the power points of described maximum is preset reference power point.
See also Fig. 3, a kind of power system of search automatically; Comprise photocurrent generator 100; The inverter 110 that links to each other with photocurrent generator 100; With load 120 and electrical network 130 that inverter 110 links to each other respectively, with the control unit 135 that inverter 110 and photocurrent generator 100 link to each other respectively, control unit 135 comprises the above-mentioned automatic searched devices of a kind of power.
Photocurrent generator 100 can be solar panels.
The native system course of work is: when starting native system, the maximum power point of control unit 135 automatic tracking illumination electric generators 100 is input to inverter 110 after having searched, and carries out being transported to load 120 or electrical network 130 after direct current and the conversion that exchanges.
Detect through practice, utilize the power that searches out maximum in real time of the utility model, can make generating efficiency improve more than 30%.
Implement method, the Apparatus and system of the automatic search of a kind of power of the utility model, have following beneficial technical effects:
Search out solar panels generatings best power be input to inverter, make full use of the luminous energy that photocurrent generator produces, raise the efficiency.
Combine accompanying drawing that the embodiment of the utility model is described above; But the utility model is not limited to above-mentioned embodiment, and above-mentioned embodiment only is schematically, rather than restrictive; Those of ordinary skill in the art is under the enlightenment of the utility model; Not breaking away under the scope situation that the utility model aim and claim protect, also can make a lot of forms, these all belong to the row of the protection range of the utility model.
Claims (2)
1. the automatic searched devices of maximum power is characterized in that, comprising:
Data importing unit: all data of solar panels power points that are used to import search;
The power judging unit: link to each other with described data importing unit, whether the data of power points have reached maximum power point when being used to judge predetermined amount of time;
Power delivery unit links to each other with described power judging unit, is used to search for said solar panel maximum power point and exports described maximum power to inverter;
Power is searched the unit, links to each other with described power judging unit, is used for constantly searching along with the difference of brightness.
2. the maximum power system of search automatically; Comprise photocurrent generator; The inverter that links to each other with said photocurrent generator is with load and the electrical network that described inverter links to each other respectively, the control unit that links to each other with described inverter and electrical network; It is characterized in that described control unit comprises the automatic searched devices of the described a kind of power of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120552110 CN202495891U (en) | 2011-12-26 | 2011-12-26 | Device and system for automatically searching power |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120552110 CN202495891U (en) | 2011-12-26 | 2011-12-26 | Device and system for automatically searching power |
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| CN202495891U true CN202495891U (en) | 2012-10-17 |
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| CN 201120552110 Expired - Fee Related CN202495891U (en) | 2011-12-26 | 2011-12-26 | Device and system for automatically searching power |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102427316A (en) * | 2011-12-26 | 2012-04-25 | 东莞市凯登能源科技有限公司 | Power automatic searching method, apparatus thereof and system thereof |
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2011
- 2011-12-26 CN CN 201120552110 patent/CN202495891U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102427316A (en) * | 2011-12-26 | 2012-04-25 | 东莞市凯登能源科技有限公司 | Power automatic searching method, apparatus thereof and system thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: DONGGUAN KAIDENG ENERGY TECHNOLOGY Co.,Ltd. Document name: Notification to Pay the Fees |
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| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121017 Termination date: 20191226 |
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| CF01 | Termination of patent right due to non-payment of annual fee |